mirror of
https://github.com/git/git.git
synced 2024-09-28 10:00:54 +02:00
52e9578985
This steals the "pickaxe" feature from JIT and make it available to the bare Plumbing layer. From the command line, the user gives a string he is intersted in. Using the diff-core infrastructure previously introduced, it filters the differences to limit the output only to the diffs between <src> and <dst> where the string appears only in one but not in the other. For example: $ ./git-rev-list HEAD | ./git-diff-tree -Sdiff-tree-helper --stdin -M would show the diffs that touch the string "diff-tree-helper". In real software-archaeologist application, you would typically look for a few to several lines of code and see where that code came from. The "pickaxe" module runs after "rename/copy detection" module, so it even crosses the file rename boundary, as the above example demonstrates. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
/*
|
|
* Copyright (C) 2005 Junio C Hamano
|
|
*/
|
|
#ifndef _DIFFCORE_H_
|
|
#define _DIFFCORE_H_
|
|
|
|
/* This header file is internal between diff.c and its diff transformers
|
|
* (e.g. diffcore-rename, diffcore-pickaxe). Never include this header
|
|
* in anything else.
|
|
*/
|
|
#define MAX_SCORE 10000
|
|
#define DEFAULT_MINIMUM_SCORE 5000
|
|
|
|
#define RENAME_DST_MATCHED 01
|
|
#define RENAME_SRC_GONE 02
|
|
#define RENAME_SCORE_SHIFT 8
|
|
|
|
struct diff_filespec {
|
|
unsigned char sha1[20];
|
|
char *path;
|
|
void *data;
|
|
unsigned long size;
|
|
int xfrm_flags; /* for use by the xfrm */
|
|
unsigned short mode; /* file mode */
|
|
unsigned sha1_valid : 1; /* if true, use sha1 and trust mode;
|
|
* if false, use the name and read from
|
|
* the filesystem.
|
|
*/
|
|
unsigned file_valid : 1; /* if false the file does not exist */
|
|
unsigned should_free : 1; /* data should be free()'ed */
|
|
unsigned should_munmap : 1; /* data should be munmap()'ed */
|
|
};
|
|
|
|
extern struct diff_filespec *alloc_filespec(const char *);
|
|
extern void fill_filespec(struct diff_filespec *, const unsigned char *,
|
|
unsigned short);
|
|
|
|
extern int diff_populate_filespec(struct diff_filespec *);
|
|
extern void diff_free_filespec_data(struct diff_filespec *);
|
|
|
|
struct diff_filepair {
|
|
struct diff_filespec *one;
|
|
struct diff_filespec *two;
|
|
char *xfrm_msg;
|
|
int orig_order; /* the original order of insertion into the queue */
|
|
int xfrm_work; /* for use by tramsformers, not by diffcore */
|
|
};
|
|
|
|
struct diff_queue_struct {
|
|
struct diff_filepair **queue;
|
|
int alloc;
|
|
int nr;
|
|
};
|
|
|
|
extern struct diff_filepair *diff_queue(struct diff_queue_struct *,
|
|
struct diff_filespec *,
|
|
struct diff_filespec *);
|
|
extern void diff_detect_rename(struct diff_queue_struct *, int, int);
|
|
extern void diff_pickaxe(struct diff_queue_struct *, const char *);
|
|
|
|
#endif
|